This is for backup.

用于备份。

youdao

Automatic Maintenance for Backup - summary.

自动备份维护——总结。

youdao

Automatic Maintenance for Backup - activities.

自动备份维护——活动。

youdao

They played alongside Muddy Waters for 10 years, before launching The Legendary Blues Band with three other members of Muddy's backup group.

VOA: standard.2010.07.20

SRC back One is called SRC for Source and one is called SRC.back which was my backup of today's source code in case I screw up.

其中一个叫SRC，用来装源代码，另一个叫,用来备份源代码，以防我搞砸了。

哈佛公开课 - 计算机科学课程节选

In the late 1980s, Jon was hired as a backup singer for pop superstar Gloria Estefan.

VOA: standard.2010.04.02

It features a ring of RGB LEDs for feedback and a standard physical key for backup.

ENGADGET

The special forces on the ground and the CIA called for backup but it was denied on several occasions.

BBC: UK 'paid Afghan warlord $2m to find Osama Bin Laden'

Replenishing fuel supplies for backup generators "is a particularly critical challenge, " he said.

WSJ: Outages Expose Wireless Carriers' Backup Plans